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3 years ago

Calculate the mass 86.08 cm3 of Zinc sample knowing that its density is 7.14 g/cm3

Chemistry

1 answer:

Shalnov [3]3 years ago

8 0

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of zinc = 86.08 cm³

density = 7.14 g/cm³

The mass of zinc is

mass = 7.14 × 86.08 = 614.6112

We have the final answer as

Hope this helps you

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4 years ago

A 13.5 g sample of an unknown gas occupies 5.10 L at 149.83 kPa and 301 K. What is the molar mass of the gas ?

alisha [4.7K]

Answer:

The molar mass of the gas is 44.19 g/mol

Explanation:

Amount of sample of gas = m = 13.5 g

Volume occupied by the gas = V = 5.10 L

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1 KPa = 0.00986 atm

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Assuming M g/mol to be the molar mass of the gas

Assuming the gas is behaving as an ideal gas

$\textrm{PV} =\textrm{nRT} \\\textrm{PV} = \displaystyle \frac{m}{M}\textrm{ RT } \\1.48 \textrm{ atm}\times 5.10 \textrm{ L} = \displaystyle \frac{13.5 \textrm{ g}}{M}\times 0.0821 \textrm{ L.atm.mol}^{-1}.K^{-1}\times 301\textrm{K} \\M = 44.19 \textrm{ g/mol}$

The molar mass of gas is 44.19 g/mol

7 0

3 years ago

*CHEMISTRY*

Alekssandra [29.7K]

It is No change!!!!!!!

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